Delaware - Criteria: D (information potential)
| Archeological Site No. 7K F 4 and 23 |
| Ashton Historic District |
| Avery's Rest Site |
| Baltimore Mills Historic Archaeological Site |
| Barnes Woods Archeological District |
| Beard, Duncan, Site |
| Beaver Valley Rock Shelter Site |
| Brandywine Village Historic District |
| Byfield Historic District |
| Cape Henlopen Archeological District |
| Carey Farm Site |
| Clyde Farm Site |
| Deep Creek Furnace Site |
| De Vries Palisade |
| Dill Farm Site |
| Ferguson, Robert, House |
| Hell Island Site |
| Hughes Early Man Sites |
| Hughes-Willis Site |
| Indian River Archeological Complex |
| Island Field Site |
| Lewes Historic District |
| Lewes Presbyterian Church |
| Lower St. Jones Neck Historic District |
| Maull House |
| Pine Grove Furnace Site |
| Poplar Thicket |
| Port Penn Historic District |
| Reading, Philip, Tannery |
| Roosevelt Inlet Shipwreck |
| Thompsons Island Site |
| Thompson's Loss and Gain Site |
| Townsend Site |
| Warrington Site |
| Wilgus Site |
| Wilkerson, J. H., & Son Brickworks |
| Wolfe's Neck Site |
| Wooddale Historic District |
| Wright, Warren T., Farmhouse Site |
Data from United States Park Service and Wikidata
